Paper-making machine



1 623,157 April 5, 1927. E- E- BERRY PAPER MAKING MACHINE Filed April'10, 1924 I 2 Sheets-Sheet 1 1,623,157 Aprll 54, 1927. E. BERRY v v PAPERMAKI NG MACHI NE Filed April 10, 1924 2 Sheets-Sheet 2 V M W" EVE1IUE\*ZZIZZMZZEEF/y v Ev v5 Patented Aipr- 1927' i e UNI'TED- S ME' EARLELWIN 1,623,157 PATENT OFFICE.

BERRY, OF BELOIT, WISCONSIN, ASSIGNOR TO BELOIT IRON WORKS, OF

BELOIT, WISCONSIN, A CORPORATION OF WISCONSIN.

PAPER-MAKING MACHINE.

Application filed April 10, 1924. Serial No. 705,429.

This invention relates to apaper making machine and more particularly tothe breast roll end of a Fourdrinicr having a traveling apron associatedwith the breast roll and 5 with the wire and adapted to be shakentherewith by any suitable means, so that the pulp which flows on to thetraveling wire at the same speed of the wire or nearly so, will not bepermitted to filter until the fibres 1c are thoroughly crossed orinterlaced and have passed the traveling apron.

' It is an object of this invention to provide the breast roll end of aFourdrinier machine with a traveling. apron adapted to prevent 1 5 pulpfiltration from taking place until after the pulp has beenthoroughlyshaken to .cause interlacing of the fibres.

It is also an object of' the invention to provide a paper making machinewherein the pulp is passed on to the wire above an endless apron whichis eng'a ed around'the breast roll within the bight 0' the wire.

It is a further object of the invention to provide a paper makingmachine having a Y movable apron beneath the wire so that it will bepossible to produce a sheet of paper with a much finer formation andwith the v fibres thoroughly interlaced to provide a sheet'of paper ofsubstantially equal strength in all directions. a

It is furthermore an object of the invention to provide a papermakingmachine wherein a film of pulp on the wire is thoroughly shakenbefore any filtration or formation takes place and without requiring theuse of a. slice before the pulp enters on the formation area of thewire. Y

It is an important object of this invention to provide a paper makingmachine of improved construction having a set of table rolls independentof the regular table rolls adapted to support a traveling apron betweenthe laps of the wire with the traveling a ron also passin around thebreast roll within the bight of said wire.

' Other and further important objects of this invention will be apparentfrom the dispanying drawings.

This invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described.

On the drawings:

Figure 1 is a fragmentary side elevation closures inthe specificationand the acc0m-- of the breast roll end of a Fourdrinier paper makingmachine embodying the principles of this invention. Figure 2 is anenlarged fragmentary transverse section taken on line 2-2 of Figure 1.Figure 3 is an enlarged fragmentary detail section taken on line 33 ofFigure 2. As shown on the drawings The reference numeral 1 indicates a.paper making machine head box or-flow' box provided with a stationaryapron 2 and with a slice 3 which is adapted for varying the thickness ofthe sheet to be formed. The flow box- 1 is supported upon base rails 4.Secured to the base rails and to the sides of the flow box 1respectively are flexible supporting springs 5 and 6 which supportbearings 7 for a breast roll 8. I

Mounted on the base rails 4 are a plurality of upright supports orpedestals 9 and 10. Mounted on the top of the uprights 9 are extensionarms 11. Deckle bars 12 are supported upon the tops of the arms 11 oneach side of the machine and support the deckle rails 13. Deckle straps14 are trained around deckle pulleys 15. Also mounted upon each of-theuprights 9 to the inside of the arms 11 are pairs of upright-woodensprings 16. Similar pairs of wooden springs 16 are also mounted upon thetops of the uprights 10.v Bolted to the tops-0f the springs 16 are'tableroll rails 17. A plurality of table roll bearings 18 are mounted uponthe table rails 17 and are equipped "with-adjusting mechanisms 18.Rotatablv supported in bearings on the table roll rails 17 is an apronroll 19'around which an endless traveling apronq20. is trained. Thetraveling apron 20 is also trained around the breast roll 8 and runsover an apron guide roll 21 supported between a pair of'the uprights 9.v

Rotatably-supported the bearings 18 between the breast roll-8 and theapron roll 19 are a plurality of apron table rolls 22 over which theupper lap of the traveling 100 apron runs. Table ,roll's 23 similar inconstruction to the rolls 22 are "supported in the bearings 18 which arelocated beyond the apron roll 19; Engaged around the breast roll to theoutside of the travel apron.

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apron roll 19 so that a spray of water may be directed on the travelingapron 20 for the purpose of washing it before it returns to the breastroll. A doctor 27 is supported on the base rails and has mounted thereona flexible strip of material 28, such as rubher. The strip of material28 acts as a scraper against the lower lap of the traveling apron toremove any fibres that may be clinging to the traveling apron and have atendency to make an uneven surface.

The operation is as follows The paper making machine of this inventioncovers a Fourdrinier section of substantially typical constructionhaving improved features, the most important being the traveling apronarrangement which is provlded so that a strong sheet of paper may bemade which is strong in both directions.-

The travel ing apron 20 runs .over the breast roll, the rolls 22 and theapron roll 19 within the bight at one end of the wire 2a, and saidtraveling apron acts to prevent any filtration or formation of the sheettaking place during the period that the pulp isbe- 1ngshaken on the wirebetween the breast roll 8 and the apron roll 19. The fibres in the pulpare thus thoroughly crossed or closely interlaced before the pulp iscarried over the traveling apron 20 by the wire over onto the tablerolls where filtration begins to take place. With the fibres thoroughlyinterlaced and the pulp traveling along at the same speed as the Wirethe fibres will settle down in their relative positions as filtrationstarts.

By using the improved traveling apron in the Fourdrin'ier the pulp iswell shaken and the fibres thoroughy interlaced before any formation ispermitted to take place due to filtration through the wire. The use ofan additional slice is, also obviated and there is therefore'no tendencyto disarrange the fibres after they have been properly interlaced asdescribed. A sheet of paper of much finer formation is thus formed, saidpaper having a more equal strength in each direction. I

The shaken pulp is carried by the wire over the apron roll 19 and overthe table rolls 23. As the traveling apron 20 passes around the roll 19water is sprayed from the spray pipe 26 into the traveling apron to washthe same before it returns to the breast roll; The flexible strip 28 onthe doctor 27 serves to scrape the washed traveling apron so'that allfibres are removed. y

I am aware that many changes may be made, and numerous details ofconstruction may be varied through a wide range without departing fromthe' principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated. bythe priorart.

I claim as my invention 5- for making acontinuous web of paper andhaving a shaking mechanism, the combina- 'tion with the breast roll anda plurality of table rolls, of an impermeable endless apron mounted formovement thereover, said apron extending a substantial distance beyondthe EARL ELWIN BERRY.

In a Fourdrinier paper machine adapted 4

